 <div class="sidenav bg">
  <div class="searchform">
   <form method="Get" action="" >
    <input type="hidden"  value="index"  name="c" />
    <input type="hidden"  value="search"  name="a" />
    <input type="text"  value=""  name="kw" />
<!--搜索指定栏目 <input type="hidden"  value="1"  name="catid" />-->
    <button type="submit">搜索</button>
   </form>
 </div>
  <div class="title"><s></s>产品分类</div>
  <div class="leftbox">
   <ul>
{nav parentid=5 }
    <li><s></s><a {if $current}class="select"{/if} href="{$vdata['url']}">{$vdata['catname']}</a></li>
{/nav}
   </ul>
  </div>
 </div>
 <div class="blank10 clear"></div>
 <div class="contact bg">
  <div class="newstitle"><h3>联系我们</h3></div>
 {block 4}
 </div>
